Why isn't my pc shutting down?

Got the windows10 preview on laptop. While clicking on the shutdown button , the shutdown process doesn't start and pc works as if no shutdown happening.suddenly after 10-15mins shutdown screen pops up and shutdown takes 15-20mins. How to fix

Got the windows10 preview on laptop. While clicking on the shutdown button , the shutdown process doesn't start and pc works as if no shutdown happening.suddenly after 10-15mins shutdown screen pops up and shutdown takes 15-20mins. How to fix

Open Device Manager and check for any missing drivers. In Control Panel make sure to examine Power options.

Got the windows10 preview on laptop. While clicking on the shutdown button , the shutdown process doesn't start and pc works as if no shutdown happening.suddenly after 10-15mins shutdown screen pops up and shutdown takes 15-20mins. How to fix

Open Device Manager and check for any missing drivers. In Control Panel make sure to examine Power options.